New CSS beta coming soon..

[acolyte_to_jippity]

It's actually the Orange Box engine, not the L4D engine. They are two entirely separate things.

The Orange Box engine powers Portal, TF2, and HL2Ep2 (IIRC).

ok, that's good. better at least. it will definately break evey single skin though, since skins for hl2 work on ep. 1, but not ep.2